题解 | #大小写转换#

import java.util.Scanner;
public class Main {
    
    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()) {
            String str = sc.next();
            char c = (char)(str.charAt(0) + 32);
            System.out.println(c);
        }
    }
}